Connection device and reception device

Abstract

A connection device includes a rod-shaped electrode, a plurality of cylindrical electrodes through which the rod-shaped electrode passes, the plurality of cylindrical electrodes being sequentially exposed on a surface in order from a front end side of the rod-shaped electrode, an insulation section configured to insulate the rod-shaped electrode and the plurality of cylindrical electrodes from each other, and a plurality of connection terminals electrically connected to the rod-shaped electrode and the plurality of cylindrical electrodes in a vicinity of a rear end of the rod-shaped electrode, the plurality of connection terminals being protruded from a rear side.

The invention claimed is: 
     
       1. A connection device, comprising:
 a rod-shaped electrode; 
 a plurality of cylindrical electrodes through which the rod-shaped electrode passes, the plurality of cylindrical electrodes being sequentially exposed on a surface in order from a front end side of the rod-shaped electrode; 
 an insulation section configured to insulate the rod-shaped electrode and the plurality of cylindrical electrodes from each other; and 
 a plurality of connection terminals electrically connected to the rod-shaped electrode and the plurality of cylindrical electrodes in a vicinity of a rear end of the rod-shaped electrode, the plurality of connection terminals being protruded from a rear side, wherein the connection terminals are connected to a conductor pattern on a wiring substrate and establish a connection with an external unit through the wiring substrate, and wherein the wiring substrate is located at the rear end of the rod-shaped electrode. 
 
     
     
       2. The connection device according to  claim 1 ,
 wherein three or more cylindrical electrodes are provided, and 
 wherein four or more connection terminals that are electrically connected to the rod-shaped electrode and the cylindrical electrodes are led out. 
 
     
     
       3. The connection device according to  claim 1 
 wherein the wiring substrate is either one of a rigid substrate, a flexible substrate, and a rigid flexible substrate. 
 
     
     
       4. The connection device according to  claim 1 
 wherein a cable configured to function as an antenna is connected through the wiring substrate. 
 
     
     
       5. The connection device according to  claim 1 
 wherein a cable configured to function as an antenna and an audio signal transmission cable are connected through the wiring substrate. 
 
     
     
       6. The connection device according to  claim 1 
 wherein the connection terminals are each inserted into a hole formed in the wiring substrate. 
 
     
     
       7. The connection device according to  claim 1 ,
 wherein the plurality of cylindrical electrodes are led out as the connection terminals through extension electrodes, and 
 wherein intervals between the extension electrodes are substantially equal to each other in a cross-sectional direction. 
 
     
     
       8. The connection device according to  claim 1 ,
 wherein a first pair of the rod-shaped electrode and one of the cylindrical electrodes adjacent to the rod-shaped electrode, and a second pair of two cylindrical electrodes form two high-frequency signal transmission paths. 
 
     
     
       9. The connection device according to  claim 8 ,
 wherein the connection terminals are connected to a conductor pattern on a wiring substrate, and two coaxial wires corresponding to the two high-frequency signal transmission paths are connected to the conductor pattern. 
 
     
     
       10. A reception device to which a connection device is capable of being connected,
 wherein the connection device includes
 a rod-shaped electrode, 
 a plurality of cylindrical electrodes through which the rod-shaped electrode passes, the plurality of cylindrical electrodes being sequentially exposed on a surface in order from a front end side of the rod-shaped electrode, 
 an insulation section configured to insulate the rod-shaped electrode and the plurality of cylindrical electrodes from each other, and 
 a plurality of connection terminals electrically connected to the rod-shaped electrode and the plurality of cylindrical electrodes in a vicinity of a rear end of the rod-shaped electrode, the plurality of connection terminals being protruded from a rear side, wherein the connection terminals are connected to a conductor pattern on a wiring substrate and establish a connection with an external unit through the wiring substrate, and wherein the wiring substrate is located at the rear end of the rod-shaped electrode. 
 
 
     
     
       11. The reception device according to  claim 10 ,
 wherein first and second high-frequency signals are obtained from two terminals among the plurality of connection terminals through capacitors. 
 
     
     
       12. The reception device according to  claim 10 ,
 wherein two terminals among the plurality of connection terminals are connected to a high-frequency attenuation element and the two terminals are configured as first and second audio signal terminals.